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Recognised as Colour

#C9FF01

  • #C9FF01
  • Green
  • Light
  • Nearest: Green yellow

#C9FF01 is a green with RGB values 201, 255, 1 and HSL 73°, 100%, 50%. It is a light colour, so black text on it reaches 17.8:1 contrast (AAA for normal text). The nearest named colour is Green yellow.

Colour values

#C9FF01#C9FF01
HEX#C9FF01
RGBrgb(201, 255, 1)
RGB (0–1)0.7882, 1, 0.0039
RGB percentages78.8%, 100%, 0.4%
HSLhsl(72.8, 100%, 50.2%)
HSV / HSBhsv(72.8, 99.6%, 100%)
CMYK21.2%, 0%, 99.6%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer13,238,017
CSS custom property--colour: #C9FF01;

Brightness & contrast

Relative luminance0.8394WCAG 2.x, 0 is black and 1 is white
Perceived brightness224.2 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 17.79:1
Contrast with white1.18:1WCAG normal text: Fail
Contrast with black17.79:1WCAG normal text: AAA
Greyscale equivalent#E1E1E1
Inverted#3600FE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#FFEE00no red cones; affects about 1% of men; ΔE 29.8 from the original
Deuteranopia#FFEC36no green cones; the most common form, about 1% of men; ΔE 32.5 from the original
Tritanopia#D4F2D9no blue cones; rare, and affects men and women equally; ΔE 86.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.18:1WCAG large text: Fail
Contrast with black, large text17.79:1WCAG large text: AAA

Named colours

Green yellow · ΔE 12.5Yellow · ΔE 22.3Chartreuse · ΔE 25.6Lawn green · ΔE 25.7Yellow green · ΔE 29.3Gold · ΔE 41.8
Nearest named CSS colourGreen yellow (#ADFF2F)ΔE 12.5, a distinctly different colour
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#3701FF
Analogous#FFB601, #4AFF01
Triadic#01C9FF, #FF01C9
Split complementary#014AFF, #B601FF
Tetradic#01FFB6, #3701FF, #FF014A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F4FFCD
Lighter +30%#EAFF9A
Lighter +20%#DFFF67
Lighter +10%#D4FF34
Darker −10%#A1CD00
Darker −20%#799A00
Darker −30%#516700
Darker −40%#293400
More saturated +25%#C9FF01
Less saturated −25%#B7DF21

Channel breakdown

R201
G255
B1
Red201 (78.8%)
Green255 (100%)
Blue1 (0.4%)
Hue72.76°
Saturation (HSL)100%
Lightness50.2%
Dominant channelGreen
Hex per channelR C9 · G FF · B 01

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Every value on this page was computed from “c9ff01” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.